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Prase Opal
Prase Opal

Polyhalite
Polyhalite



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Prase Opal
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Polyhalite

Prase Opal and Polyhalite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.98-2.25
2.78
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
1.6 Cleavage
Not Available
Perfect on {10 1 }; parting on {010}
1.7 Mohs Hardness
5-6.5
3.5
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Not Available

Prase Opal and Polyhalite Chemical Formula

While comparing Prase Opal and Polyhalite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Prase Opal and Polyhalite chemical formula.

  • Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
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Prase Opal and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prase Opal and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prase Opal and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Prase Opal is 2.78 whereas that of Polyhalite is 2.78.